CVE-2021-31862

MEDIUM NUCLEI

SysAid 20.4.74 - Unauthenticated Stored Cross-Site Scripting via KeepAlive.jsp stamp Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-31862. PoCs published by RobertDra. A Nuclei detection template is also available.

AI-analyzed exploit summary The repository provides a functional proof-of-concept for a reflected XSS vulnerability in SysAid 20.4.74 via the KeepAlive.jsp parameter. The exploit is triggered by injecting a malicious script into the 'stamp' parameter, demonstrating the vulnerability without requiring authentication.

Description

SysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication.

Exploits (1)

nomisec WORKING POC 3 stars
by RobertDra · poc
https://github.com/RobertDra/CVE-2021-31862

The repository provides a functional proof-of-concept for a reflected XSS vulnerability in SysAid 20.4.74 via the KeepAlive.jsp parameter. The exploit is triggered by injecting a malicious script into the 'stamp' parameter, demonstrating the vulnerability without requiring authentication.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: SysAid 20.4.74 and prior
No auth needed
Prerequisites: Access to the target application's KeepAlive.jsp endpoint
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

Nuclei Templates (1)

SysAid 20.4.74 - Cross-Site Scripting
MEDIUMby jas37
Shodan: http.favicon.hash:1540720428
FOFA: icon_hash=1540720428

References (2)

Core 2
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://www.sysaid.com/product/on-premise/latest-release

Scores

CVSS v3 6.1
EPSS 0.0392
EPSS Percentile 89.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
sysaid/sysaid 20.4.74
Published Oct 29, 2021
Tracked Since Feb 18, 2026